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They are the Senner MusicPro ones. So not for sleep. There is some information where is says it reduces by 20-28 dB depending on Hz.

I bought some highly rated Senner earplug protection off Amazon 16 months ago. After using them only once at a gig, I've had chronic tinnitus ever since. My lawyer cannot establish liability of the product as it has lots of positive reviews. I know that Amazon has a huge problem with...